Perturbation
From Wikipedia, the free encyclopedia
Perturbation or perturb may refer to any of numerous concepts in several fields:
- Perturbation theory, mathematical methods that give approximate solutions to problems that cannot be solved exactly
- Perturbation (geology), changes in the nature of alluvial deposits over time
- Perturbation (astronomy), alterations to an object's orbit caused by gravitational interactions with other bodies
- Perturbation theory (quantum mechanics), a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one
- Perturbation (biology), an alteration of the function of a biological system, induced by external or internal mechanisms
- Perturbation (economic), an alteration of the function of an economic system, induced by external or internal mechanisms
- Perturbation (machine learning), making changes in the dataset to (re)learn a classifier (used in bagging and boosting).
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